NHTSA recall · Reported June 10, 2021
BUICK,CADILLAC,CHEVROLET,GMC 2021: AIR BAGS:SRS MALFUNCTION WARNING LAMP/LIGHT
General Motors, LLC (GM) is recalling certain 2021 Buick Envision, Cadillac CT4, CT5, Escalade, Escalade ESV, Chevrolet Tahoe, Corvette, Suburban, GMC Yukon, Yukon XL vehicles. T…
Buick,Cadillac,Chevrolet,Gmc recalled General Motors, LLC (GM) is recalling certain 2021 Buick Envision, Cadillac CT4, CT5, Esc….
BUICK,CADILLAC,CHEVROLET,GMC 2021: AIR BAGS:SRS MALFUNCTION WARNING LAMP/LIGHT was recalled by Buick,Cadillac,Chevrolet,Gmc in June 10, 2021. Reason: General Motors, LLC (GM) is recalling certain 2021 Buick Envision, Cadillac CT4, CT5, Escalade, Escalade ESV,…. Remedy: The communications gateway module software will be updated by a dealer, or through an ove…. Verify recall #21V421000 with the NHTSA before acting.
The recall
Buick,Cadillac,Chevrolet,Gmc issued this NHTSA recall-General Motors, LLC (GM) is recalling certain 2021 Buick Envision, Cadillac CT4, CT5, Escalade, Escalade ESV,….
- None
- agency class
- June 10, 2021
- reported
Sourced from official NHTSA enforcement records. Verify recall #21V421000 with the agency before acting. Full product description, hazard, remedy, and related recalls are below.
Recall Insight
The number of affected units is not disclosed in the agency filing, which is common for drug and food recalls where lot-level tracking supersedes unit counts. Distribution scope (see Distribution below) directly affects the consumer exposure window and determines whether a recall remains regional or escalates into a nationwide advisory. Consumers holding this product should act on the agency's documented remedy above rather than relying on general guidance.
Within the same product category the archive holds 6 closely related recalls, 3 from NHTSA - clustering in a narrow category often points to a systemic quality-control or supplier issue rather than a one-off defect. Always verify the recall number against the official agency record before acting.
Vehicles recalls over time
Where this recall sits in its category - 7,783 vehicles recalls on record
Product description
General Motors, LLC (GM) is recalling certain 2021 Buick Envision, Cadillac CT4, CT5, Escalade, Escalade ESV, Chevrolet Tahoe, Corvette, Suburban, GMC Yukon, Yukon XL vehicles. The communications gateway module incorrectly processes a loss of communication with the sensing diagnostic module (SDM), causing the air bag malfunction indicator light to inconsistently illuminate.
Reason for recall
General Motors, LLC (GM) is recalling certain 2021 Buick Envision, Cadillac CT4, CT5, Escalade, Escalade ESV, Chevrolet Tahoe, Corvette, Suburban, GMC Yukon, Yukon XL vehicles. The communications gateway module incorrectly processes a loss of communication with the sensing diagnostic module (SDM), causing the air bag malfunction indicator light to inconsistently illuminate.
Hazard
The air bag malfunction indicator light may fail to warn the driver of a problem with the air bag, increasing the risk of injury.
Remedy, what to do
The communications gateway module software will be updated by a dealer, or through an over-the-air (OTA) update, free of charge. Owner notification letters were mailed on July 1, 2021. Owners may contact Buick customer service at 1-800-521-7300, Cadillac customer service at 1-800-458-8006, Chevrolet customer service at 1-800-222-1020, or GMC customer service at 1-800-462-8782. GM's number for this recall is N212338110.
Recall Profile
| Attribute | Value |
|---|---|
| Agency | National Highway Traffic Safety Administration |
| Severity class | Not classified by agency |
| Status | Active |
| Recall number | 21V421000 |
| Date reported | June 10, 2021 |
| Date initiated | June 10, 2021 |
| Recalling firm | Buick,Cadillac,Chevrolet,Gmc |
| Affected scope | Not disclosed |
| Distribution | United States |
| Official source | NHTSA notice → |
Profile values are sourced directly from the official NHTSA enforcement record. Source: National Highway Traffic Safety Administration.
What to do with this recall
The communications gateway module software will be updated by a dealer, or through an over-the-air (OTA) update, free of charge. …
- Check the recall number (21V421000) and product description against the item you own. Search the archive
- Confirm the current status and remedy on the official NHTSA notice before acting. NHTSA notice
- Follow the documented remedy (refund, replacement, repair, or disposal) rather than general advice. What to do next
This page summarizes the official NHTSA record for research and awareness; it is not legal, medical, or safety advice. Verify with the issuing agency before acting.
Frequently Asked Questions
What product was recalled? ▼
Why was this product recalled? ▼
What should consumers do? ▼
Which agency issued this recall? ▼
Where was the recalled product distributed? ▼
How do I report an injury from a recalled product? ▼
Nationwide recalls with similar severity or category timing
Vehicle and equipment notices outside this manufacturer and filing state, matched by archive severity grade and report timing.
Similar severity · nearest report date
Same archive severity grade, closest by report date among other firms and states.
Similar Vehicles · nearest report date
Same product category, closest by report date among other firms and states (deduped against the severity set).
Compare this recall with KTM North America Recalls Off-Road Motorcycles Due to Risk … → · All Vehicles recalls
Methodology · Corrections · Archive as of August 2026